try with package-lock

node-packages.nix

@@ -643,10 +643,13 @@ let
       sources."mime-1.3.4"
       sources."mime-db-1.52.0"
       sources."mime-types-2.1.35"
-      sources."minimist-1.2.6"
-      sources."mkdirp-0.5.6"
       sources."ms-0.7.1"
-      sources."multer-1.1.0"
+      (sources."multer-1.1.0" // {
+        dependencies = [
+          sources."minimist-1.2.6"
+          sources."mkdirp-0.5.6"
+        ];
+      })
       sources."negotiator-0.5.3"
       sources."object-assign-3.0.0"
       sources."on-finished-2.3.0"
@@ -683,7 +686,7 @@ let
     };
     production = true;
     bypassCache = true;
-    reconstructLock = true;
+    reconstructLock = false;
   };
 in
 {